(cdxxx) stackoverflow perl report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2020-02-08 21:08:34 GMT

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1. Some string values ("0", "", and " ") are defined, but (==undef) - [4/1]
2. printf format specifiers for Perl API types - [3/2]
3. How to find the number of vowels in a string using Perl - [2/4]
4. Getopts to flag bad options without dash - [2/3]
5. What does "#! -*-perl-*-" mean? - [2/2]
6. Regex : replace a phrase only if NOT preceded by a word - [2/2]
7. Building table from list using nearest value? - [1/5]
8. Perl Parsing Without Package - [1/3]
9. Perl array loop - [1/3]
10. Asynchronous programming in Perl - [1/2]